Printing wheel



PRINTING WHEEL Filed Feb. 14, 1929 INVENTOR FREDERICK GEORGE CREED ATTO RNEY *0 7 u u v a i i 7 rear posltion against the ring 25 by a front Patfinted (l st. 35 71931 tame srarss FREDERICK GEORGE .PANY, LI ITED; or

Mme 5' Application filedlFebruary 14, [1929, Serial No. ssasinana ia eieat Britain rebriiiry 14,*-"-1 92s.*

This invention relates toaprinting wheelfor type printing telegraphand-analogous uses, and has for its object to produce a-type wheel which shall be construe tion and therefore'canable ofb'eing driven at 1,; s 1 1,1 1" 11 a ugh speed win one amage, Out wnic 1 s as at the same time ensure correct alignment and cleanv sharp printing of the printedacharacters. port the pi' inting wheel inla better manner than previously upon its shaft and to im-,

prove the frictional driving means between it and the driving shaft. ,7 1 J For this purpose the type characters are carried separately on holders arranged around the wheel and mounted to Ways t print a character.

Figure 1 of the accompanying drawings shows in longltudinal section one'construction of printing wheel and associated 'parts in accordance wlth this invention; Figure 2 shows a longltudinal SCl310ItOf the wheel itself, and Figure 3 is an edge view'of atypev bar. The type bars 7 section secured to the'portion 24a. The rear support for the bars 7 is constituted by a 35 collar 25 of angle section carried by the flange I 24 of the hub 22 and bearing at its rear side against an outwardly extending portion 24?) of the flange 24:, the collar 25 also acting tof osition the discs 2a andBa.

The type bars Tare normally held'gin their :retaining ring ia that bears against recessed portions 75 ofthe bars. Horizontally 1 arranged coiled springs 86 are securedfto the ring or disc 4a and to the rear flange-2230f the hub 22, extending through lholes 2-H; in a the flange 24:, andserve to IQt HHJ lLO normal position any type bar that has been struck forward by a printinghamnier 9 or the lik'e: 50 J 1 radial arm 26 is secured to the flange 28bit onnnn, 0F cnoYnoin It has also forits'objectto sup-:1

outer endcf the hub22-and is fixed to the'fre'e slide end are carr ed in aligned slots; in discs 2a and 3a. The printing wheel comprising a hub'22 provided with flanges 23 and and 24. The flange 24 is formed with ,a

secured to this portion. In the embodiment illustrated the discs 2a and 3a are constituted by aring of channel finite ess, ssreivoit To; onEnn I {coins oeorpoir ni enanny the hub 22 and is formedjb metal :blank lnto shape.

The faceof each type on" ylpressing' a; sheet character ma be end of the shaft byascrewflfi." The" arrange- I readily slippe iofi'the'shaft 14f" Eire dF-to t e dr'ivijngjjshaftil il, near the "hub 22 carrying, the, type :bars 77 can be bars 18 are provided one of which is selectedin known manner to be released and drop into.

the-path ofthe extension 26a of the arm 26 i to stop-the type wheel. The portion of'the i gn driving shaft adjacent to the inner side of the head 1'7 is mounted to rotate in a ball 1 bearin 2Q carrie'd by the adjacent end of a] stationary cylinder 21'used for carrying ad-.

release ofthe bars-18.

Claims.

,1. A printing device' comprising a con- I means for causing longitudinalmovement of said members. -2.'A printing naled on said shaft, a clutch connection be: a

I {tween theshaft and P the wheel, a plurality :37 vof character carrying members and support ing and guiding "means in which said mern v d -orifiat'shapeto suit theesurface ofthe :platen used for supporting-atapeor sheet iof igiipaper; on which th'e'pimpressionis to, be made.

nent is'such that whenthefplate 15 is removed a V I he iii- 3 1 f Yner, endof the hub :22, is'acup-shaped head o a 17 open at'its front-side and across which ex I (tends he radial arm26 fixedtothe hnb 22g f. Fitting tightly against the inner periphery of a y a l the rim of the cup-shaped head 17 is a fricwith the rim of theheadl? and rotates the dialarmhnb and printing wheel. 'Selector. e

justable annular combs used for the selectiv s stantly rotating shaft, a typewheel ournale'd on said shaft, a clutch connection between ec Q device" comprising a confin 3 tinnously. rotating shaft, a typewheeljourbers may be moved in the direction of their length.

3. A printing device comprising a continuously rotating shaft, a typewheel jour- 5 naled on said shaft, a clutch connection between said shaft and Wheel, a plurality of character carrying members, supporting and guiding means in Which said members may be moved in the direction of their length and parallel to said shaft to effect printing,

4:. A printing device comprising a constantly rotating shaft, a typeWheel journaled on said shaft, a clutch between the shaft and the Wheel, a plurality of character carrying members, supporting and guiding means in which said members may be moved longitudinally and restoring means common to all of said members.

5. A printing device comprising a constantly rotating shaft, a typevvheel journaled on said shaft, a clutch between the shaft and the Wheel, a plurality of character carrying members, supporting and guiding means in which said members may be moved longitudinally, a single screw being the sole means for retaining said Wheel and clutch on said shaft.

In Witness whereof, I hereunto subscribe my name this 31st day of January, 1929. 3- FREDERICK GEORGE CREEI). 

